title: Dorsolumbosacral agenesis, nonterminal myelocystocele and secondary tonsillar herniation: prenatal and postnatal MRI evaluation and pathological correlation.
abstract: We present a complex case of dorsolumbosacral agenesis associated with a nonterminal myelocystocele and secondary tonsillar herniation. The secondary tonsillar herniation, mimicking a Chiari I malformation, was evident at postnatal life with concomitant enlargement of the myelocystocele. Prenatal and postnatal MRI proved invaluable in recognizing temporal change in the position of the cerebellar tonsils. Postmortem examination confirmed the presence of a nonterminal myelocystocele and dorsolumbosacral agenesis.
authors.affiliation: Section of Pediatric Neuroradiology, Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Md., USA.
authors.forename: Thangamadhan
authors.initials: T
authors.lastname: Bosemani
authors.forename: Barbara J
authors.initials: BJ
authors.lastname: Crain
authors.forename: Thierry A G M
authors.initials: TA
authors.lastname: Huisman
authors.forename: Frances J
authors.initials: FJ
authors.lastname: Northington
authors.forename: Aylin
authors.initials: A
authors.lastname: Tekes
mesh_terms: D000328:Adult; D002490:Central Nervous System / Q000002:abnormalities*; D004677:Encephalocele / Q000473:pathology*; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000473:pathology*; D006801:Humans; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D008591:Meningomyelocele / Q000473:pathology*; D011247:Pregnancy; D011256:Pregnancy Outcome; D059285:Pregnancy, Twin; D011296:Prenatal Diagnosis; D013131:Spine / Q000002:abnormalities*